1: \ assertions
2:
3: \ Copyright (C) 1995,1996,1997,1999,2002,2003 Free Software Foundation, Inc.
4:
5: \ This file is part of Gforth.
6:
7: \ Gforth is free software; you can redistribute it and/or
8: \ modify it under the terms of the GNU General Public License
9: \ as published by the Free Software Foundation; either version 2
10: \ of the License, or (at your option) any later version.
11:
12: \ This program is distributed in the hope that it will be useful,
13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: \ GNU General Public License for more details.
16:
17: \ You should have received a copy of the GNU General Public License
18: \ along with this program; if not, write to the Free Software
19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
20:
21: require source.fs
22:
23: variable assert-level ( -- a-addr ) \ gforth
24: \G All assertions above this level are turned off.
25: 1 assert-level !
26:
27: : assertn ( n -- ) \ gforth assert-n
28: \ this is internal (it is not immediate)
29: assert-level @ >
30: if
31: POSTPONE (
32: then ;
33:
34: : assert0( ( -- ) \ gforth assert-zero
35: \G Important assertions that should always be turned on.
36: 0 assertn ; immediate
37: : assert1( ( -- ) \ gforth assert-one
38: \G Normal assertions; turned on by default.
39: 1 assertn ; immediate
40: : assert2( ( -- ) \ gforth assert-two
41: \G Debugging assertions.
42: 2 assertn ; immediate
43: : assert3( ( -- ) \ gforth assert-three
44: \G Slow assertions that you may not want to turn on in normal debugging;
45: \G you would turn them on mainly for thorough checking.
46: 3 assertn ; immediate
47: : assert( ( -- ) \ gforth
48: \G Equivalent to @code{assert1(}
49: POSTPONE assert1( ; immediate
50:
51: : (end-assert) ( flag nfile nline -- ) \ gforth-internal
52: rot if
53: 2drop
54: else
55: .sourcepos ." : failed assertion"
56: true abort" assertion failed" \ !! or use a new throw code?
57: then ;
58:
59: : ) ( -- ) \ gforth close-paren
60: \G End an assertion.
61: compile-sourcepos POSTPONE (end-assert) ; immediate
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>